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Anyways, here is my problem, and trying to work through it to obtain the correct answer...but it is stumping me!!

The question as follows:

1. Suppose data was collected for a sample of 3.oo moles of the ideal gas represented by the Pressure versus Volume -1 graph below. What is the Kelvin temperature of the gas?

the graph has P (pressure) for the Y axis, and 1/V for the x axis.

The slope =45.6 atm L and is at an approximate 45 degree angle (straight line) on the graph.

Any thoughts?

I am trying to use the equation of P=nRT/V=constant/V to solve this, but am not sure where/how to start.

P=total pressure of the gas

V=Volume of the gas

n=# of moles of gas

T absolute temperature og gas in Kelvin

It is given that R=8.314 J/mol and K=0.0821 atm liter/mol K

And here is a real tough one...

2. 2.00 moles of an ideal gas at -50 degrees Celsius has a volum of 1.00 liter. What is the pressure (in atm) in the container??

I can't find the proper equation/setup for this one and am totaly lost here...these two problems are just evil!!!

Please help, if you can!! Thanks!!